Cleaner for belt and lower roller of elevating graders



Jan. 7, 1941. ,A. G, ANDERSON 7 2,227,776

CLEANER FOR BELT AND LOWER ROLLER 0F ELEVATING GRADERS Filed Oct. 1, 193a 2 Sheets-Sheet 1 IN V EN TOR.

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Jan. 7, 1941- A. e. ANDERSON CLEANER FOR BELT AND LOWER ROLLER OF ELEVAI'ING GRADERS 2 Sheet-Sheet 2 Filed Oct. 1, 1938 IN VEN TOR. $042 f/fwaawwy I Z A I NEY Patented Jan. 7, 1941 PATENT OFFICE CLEANER FOR BELT AND LOWER ROLLER OF ELEVATING GRADERS t Adolph G. Anderson, Spencer, Iowa Application October 1, 1938, Serial No. 232,897

2 Claims.

This invention relates to a means for cleaning the belt and lower roller of elevating graders, and it consists in the constructions, arrangements and combinations herein described and claimed.

A common difficulty experienced with elevating graders is that an accumulation of dirt or soil on the inner side of the elevating belt causes the lower roller of the machine to clog and cease to function, making it necessary in many instances to stop the operation, in order that the foreign matter may be removed.

It is therefore the object of the invention to provide a scraper device which may be readily installed upon the carrier sills of the grader, being adjustably related to the lower roller.

It is also an object of the invention to provide the scraper device with a plurality of deflecting vanes for effecting discharge of loosened material, to the sides of .the elevator.

Additional objects, advantages and features of invention will be apparent from the following description, considered in conjunction with the accompanying drawings wherein.

Figure 1 is a side elevation of a partion of the elevator showing my scraper installed.

Figure 2 is a cross section on the line 2-2 of Fig. 1.

Figure 3 is a cross section on the line 3-3 of Fig. 1.

a Figure 4 is a fragmentary side elevation of a modified form of scraper.

Figure 5 is a cross section on the line 5--5 of Figure 4.

There is illustrated a pair of sills H), which have bearings II for support of a roller l2 about which the grader belt l3 travels during operation, this being a well known and conventional construction.

Upon the upper edge of the sills ID in advance of the roller l2 there is mounted a scraper blade I l, and as clearly shown in Figure 1, the blade comprises a sharpened edge l5 adapted to contact the peripheral edge of the roller.

The blade I4 is obviously of a length greater than the roller and includes longitudinally eX- tended foot members It adapted to lie flush upon the sills. The foot members It each have longitudinal slots I1 and receive a bolt l8. It will thus be seen that the scraper may be adjusted toward or away from peripheral contact with the roller. The scraper l4 includes a plurality of deflector vanes l9 suitably spaced longitudinally of the scraper, these vanes diverging in opposite directions from the medial line of travel of the belt, as may be seen in Figure 3. The deflector vanes l9 are each arcuately shaped at their forward ends, as at 20, so as to fit the contour of the roller l2, and of a height so as to stop short of the underside of the upper reach of the belt IS.

The vanes l9 are slightly canted and extend obliquely to the longitudinal edges of the belt so that material loosened from the roller and belt will be caused to discharge over respective sides of the belt. Any number of deflectors may be employed, this depending upon the width of the 10 belt.

In use, material which may adhere to the roller l2 will be scraped therefrom by virtue of the blade M, and similarly material upon the under side of the upper reach of the belt l3 will be re- 1 moved due to contact with the deflectors I9. As has been stated, the loosened material will then be conducted by means of the deflector vanes to respective sides of the belt and discharged over the edges thereof. This removal of the loosened 20 material is made possible due to the material striking the deflectors with considerable force causing deflection of the material in the direction of the sides of the belt.

In Figures 4 and 5 a modified form of scraper is shown embodying the sills l0, bearings l I, roller I2 and belt l3, as before described. The sills In support a scraper I4, which in this instance, is formed from a sheet strap of metal of suitable guage and width for the purposes intended. The 30 ends of the strap are of a slightly greater width than the major portion of the strap, and inwardly of the ends the metal is cut as at 2|, permitting the bending of the ends to form foot members 22. The foot members are each provided with a longitudinal slot 23 for reception of a fastening bolt 24, the latter being engaged in respective sills ill for rigid yet adjustable securement of the scraper, as will be apparent.

The scraper I4 is inclined at a suitable angle, the upper portion 25 being slightly curved to present the scraping edge 26 so as to engage the roller 12 at such angle as to readily scrape material therefrom.

Upon the rear face of the scraper Hi there are secured deflector vanes 21 and 2B, the vanes 21 functioning to deflect loosened material to one side of the belt, while the vanes 28 act to discharge material to the other side thereof, this being effected by the inclination of the vanes, 50 and impact of material thereagainst, as previously explained.

The vanes 21-28 in the presentinstance are elongated metal straps, one end of which is provided with an attaching foot 29, bent at an angle 55 so as to abut flatly against the scraper M, where they may be welded or otherwise secured. The bend between the foot and the vanes is such as to slightly cant the vanes in a direction to deflect loosened material to respective sides of the belt.

While I have shown and described preferred constructions, this is by way of illustration only, and I consider as my own all such modifications in structure as fairly fall within the scope of the appended claims.

I claim:

1. In a scraper for cleaning the belt and lower roller of elevating graders, a frame, a roller revolubly mounted thereon, a belt trained about the roller, a scraper carried by the frame and extending beyond the ends of the roller, said scraper having a plurality of spaced elongated deflector. vanes positioned beneath the upper reach of the belt and spaced from the lower reach of the belt,

said deflector vanes being canted and diverging in opposite directions from the medial line of travel of the belt.

2. In a scraper for cleaning the belt and lower roller of elevating graders, a frame, a roller revolubly mounted thereon, a belt trained about the roller, a scraper, said scraper having a slotted foot at its ends, said slot extending longitudinally thereof, a bolt extended through the slot and threadedly engaged in the frame, the scraper extending beyond the ends of the roller, said scraper having a plurality of spaced elongated deflector vanes positioned beneath the upper reach of the belt, and spaced from the lower reach of the belt, said deflector vanes being canted and diverging in opposite directions from the medial line of travel of the belt.

ADOLPH G. ANDERSON. 

